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| 1 | A Robust Damage Detection Method Developed for Offshore Jacket Platforms Using Modified Artificial Immune System Algorithm显示文摘Steel jacket-type platforms are the common kind of the offshore structures and health monitoring is an important issue in their safety assessment.In the present study,a new damage detection method is adopted for this kind of structures and inspected experimentally by use of a laboratory model.The method is investigated for developing the robust damage detection technique which is less sensitive to both measurement and analytical model uncertainties.For this purpose,incorporation of the artificial immune system with weighted attributes(AISWA) method into finite element(FE) model updating is proposed and compared with other methods for exploring its effectiveness in damage identification.Based on mimicking immune recognition,noise simulation and attributes weighting,the method offers important advantages and has high success rates.Therefore,it is proposed as a suitable method for the detection of the failures in the large civil engineering structures with complicated structural geometry,such as the considered case study. | Mojtahedi A. Lotfollahi Yaghin M.A. Hassanzadeh Y. Abbasidoust F. Ettefagh M.M. Aminfar M.H. | 2012 | China Ocean Engineering2012，26，3： | 4 |
| 2 | Health monitoring of time-varying stochastic structures by latent components and fuzzy expert system显示文摘在这篇论文,一个新奇参量的基于模型的分解方法为变化时间的结构监视的结构的健康被建议。为这个目的,先进功能系列的时间依赖者汽车回归的动人的一般水准(FS-TARMA ) 技术被用来估计在参量的信号分解计划使用的参数和革新变化。另外,一个唯一的特征抽取和减小方法基于分解信号,已知的同样潜伏的部件(LC ) ,被建议。为了在实验室评估建议方法,数字模拟和试验性的研究的效率,在变化时间的结构上被进行,在损坏的各种各样的类型被介绍的地方。模糊专家系统(FES ) 被用作一个分类工具当时,证明建议方法成功地识别不同结构的条件与另外的方法相比基于非减少、平常的特征抽取。 | M. M. Ettefagh M. H. Sadeghi | 2008 | Earthquake Engineering and Engineering Vibration2008，7，1： | 3 |
| 3 | Fault diagnosis using noise modeling and a new artificial immune system based algorithm显示文摘A new fault classification/diagnosis method based on artificial immune system(AIS) algorithms for the structural systems is proposed. In order to improve the accuracy of the proposed method, i.e., higher success rate, Gaussian and non-Gaussian noise generating models are applied to simulate environmental noise. The identification of noise model, known as training process, is based on the estimation of the noise model parameters by genetic algorithms(GA) utilizing real experimental features. The proposed fault classification/diagnosis algorithm is applied to the noise contaminated features. Then, the results are compared to that obtained without noise modeling. The performance of the proposed method is examined using three laboratory case studies in two healthy and damaged conditions. Finally three different types of noise models are studied and it is shown experimentally that the proposed algorithm with non-Gaussian noise modeling leads to more accurate clustering of memory cells as the major part of the fault classification procedure. | Farshid Abbasi Alireza Mojtahedi Mir Mohammad Ettefagh | 2015 | Earthquake Engineering and Engineering Vibration2015，14，4： | 3 |
| 4 | Energy Harvesting From Sea Waves With Consideration of Airy and JONSWAP Theory and Optimization of Energy Harvester Parameters显示文摘为在海驱动低力量的电子设备的新方法之一是收获系统的一个波浪精力。在这个方法,压电的材料被采用把海波浪的机械精力变换成电能。这个方法的优点基于避免控告系统的一节电池。研究在然而,就与随机的 JONSWAP 波浪理论收获的精力而言从海波浪收获的精力上被做了,然后决定收获的精力的最佳价值是新的。这份报纸由实现 JONSWAP 波浪模型做那,计算生产力量,并且写实地证明产量力量与更简单的空气的波浪模型比较被减少。另外,精力 harvester 系统的参数用一个模仿的退火的算法被优化,产出增加的生产力量。 | Hadi Mirab Reza Fathi Vahid Jahangiri Mir Mohammad Ettefagh Reza Hassannejad | 2015 | Journal of Marine Science and Application2015，14，4： | 2 |
| 5 | Experimental Investigation of TARMAX Model for Modeling of Hydrodynamic Forces on Cylinder-like Structures显示文摘A new approach that models lift and drag hydrodynamic force signals operating over cylindrical structures was developed and validated. This approach is based on stochastic auto regressive moving average with exogenous (ARMAX) input and its time-varying form, TARMAX. Model structure selection and parameter estimation were discussed while considering the validation stage. In this paper, the cylindrical structure was considered as a dynamic system with an incoming water wave and resulting forces as the input and outputs, respectively. The experimental data, used in this study, were collected from a full-scale rough vertical cylinder at the Delft Hydraulics Laboratory. The practicality of the proposed method and also its efficiency in structural modeling were demonstrated through applying two hydrodynamic force components. For this purpose, an ARMAX model is first used to capture the dynamics of the process, relating in-line forces provided by water waves;secondly, the TARMAX model was applied to modeling and analysis of the lift forces on the cylinder. The evaluation of the lift force by the TARMAX model shows the model is successful in modeling the force from the surface elevation. | M. A. Lotfollahi Yaghin A. Mojtahedi M. M. Ettefagh M. H. Aminfar | 2011 | Journal of Marine Science and Application2011，10，3： | 2 |
| 6 | Knock Detection in Spark Ignition Engines by Vibra-tion Analysis of Cylinder Block a Parametric Modeling Approach显示文摘 | Ettefagh M M Sadeghi M H Pirouzpanah V | 2008 | Mechanical Systems and Signal Process-ing2008，22，6： | 1 |
| 7 | Knock detection in spark ignition engines byvibration analysis of cylinder block : A parametricmodeling approach显示文摘 | ETTEFAGH M M SADEGHI M H PIROUZPANAH V | 2008 | Mechanical Systems and SignalProcessing2008，22，6： | 1 |
| 8 | A variant of nephrogenic fibrosing dermopathy with osteoclast-like giant cells:a syndrome of dysregulated matrix remodeling?显示文摘 | Hershko K Hull C Ettefagh L | 2004 | J Cutan Pathol2004，31，3： | 1 |
| 9 | Application of a new parametric model-based filter toknock intensity measurement显示文摘 | ETTEFAGH M M SADEGHI M H REZAEE M | 2010 | Measurement2010，43，3： | 1 |
| 10 | Tractor cabin's passive suspension parameters optimization via experimental and numerical methods 显示文摘 | Zehsaz M Sadeghi M H Ettefagh M M | 2011 | Journal of Terramechanics2011，48，： | 1 |
| 11 | Crack detection in beam-like structures using genetic algorithms显示文摘 | Mohammad-Taghi Vakil-Baghmisheh Mansour Peimani Morteza Homayoun Sadeghi Mir Mohammad Ettefagh | 2007 | Applied Soft Computing Journal2007，，2： | 1 |
| 12 | Quantitative analysis of autoinducing peptide I (AIP-I) from Staphylococcus aureus cuhures using ultrahigh performance liquid chromatography-high resolving power mass spectrometry 显示文摘 | Junio HA Todd DA Ettefagh KA | 2013 | J Chromatogr B Analyt Technol Biomed Life Sci2013，1，930： | 1 |
| 13 | Knock detection in spark ignition engines by vibration analysis of cylin- der block: a parametric modeling approach 显示文摘 | ETTEFAGH M SADEGHI M PIROUZPANAH V | 2008 | Mechanical Systems and Signal Processing2008，22，6： | 1 |
| 14 | Knock detection in spark ignition engines by vibration analysis of cylinder block: A parametric modeling approach 显示文摘 | Ettefagh M M Sadeghi M H Pirouzpanah V | 2008 | Mechanical Systems and Signal Processing2008，22，6： | 1 |
| 15 | Developing a robust SHM method for offshore jacket platform using model updating and fuzzy logic system显示文摘 | A. Mojtahedi M.A. Lotfollahi Yaghin Y. Hassanzadeh M.M. Ettefagh M.H. Aminfar A.B. Aghdam | 2011 | Applied Ocean Research2011，，4： | 1 |
| 16 | Knock Detection in Spark Ignition Engines by Vibration Analysis of Cylinder Block: A parametric modeling approach 显示文摘 | Ettefagh M M Sadeghi M H Pirouzpanah V | 2008 | Mechanical Systems and Sig- nal Processing2008，，22： | 1 |
| 17 | Asynchronous Input Gear Damage Diagnosis Using Time Avera- ging and Wavelet Filtering 显示文摘 | JAFARIZADEH M A HASSANNEJAD R ETTEFAGH M M | 2008 | Mechanical Systems and Signal Processing2008，22，1： | 1 |
| 18 | Optimal synthesis of four-bar steering mechanism using AIS and genetic algorithms 显示文摘 | Mir Mohammad Ettefagh Morteza Saeidi Javash | 2014 | Journal of Mechanical Science and Technology2014，28，6： | 1 |
| 19 | Knock Detection in Spark Ignition Engines by Vibration Analysis of Cylinder Block:a Parametric Modeling Approach显示文摘 | Ettefagh M M Sadeghi M H Pirouzpanah V | 2008 | Mechanical Systems and Signal Processing2008，22，6： | 1 |
| 20 | Knock Detection in Spark Ignition Engines by Vibration Analysis of Cylinder Block:a Parametric Modeling Approach显示文摘 | Ettefagh M M Sadeghi M H Pirouzpanah V | 2008 | Mechanical Systems and Signal Processing2008，22，6： | 1 |
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